The document summarizes the human reproductive system and process. It describes the primary and secondary sexual characteristics that develop during puberty in males and females. It then explains the male and female reproductive systems and organs. It outlines the process of fertilization, pregnancy, and labor, including how the embryo develops into a fetus and baby over trimesters until birth.

1. HUMANHUMAN
REPRODUCTIONREPRODUCTION
BYBY
AlexAlex VilaVila
&&
Iván RatónIván Ratón

2. PRIMARY SEXUALPRIMARY SEXUAL
CHARACTERISTICSCHARACTERISTICS
The reproductive systems are the primary sexual characteristics. WeThe reproductive systems are the primary sexual characteristics. We
already when we are born.already when we are born.
SECONDARY SEXUALSECONDARY SEXUAL
CHARACTERISTICSCHARACTERISTICS
The external characteristics which differentiate men from women are calledThe external characteristics which differentiate men from women are called
secondary sexual characteristics. During puberty, between the ages ofsecondary sexual characteristics. During puberty, between the ages of
eleven and fifteen, the reproductive system matures. Some physicaleleven and fifteen, the reproductive system matures. Some physical
changes are the same from both sexes.changes are the same from both sexes.
Other changes are specific to each sex:Other changes are specific to each sex:
* Girls develop breasts and their hips get wider.* Girls develop breasts and their hips get wider.
* Boys get deeper voices, and get facial hair.* Boys get deeper voices, and get facial hair.

3. REPRODUCTIVE CELLSREPRODUCTIVE CELLS
Reproductive cells carry out the function of reproduction.Reproductive cells carry out the function of reproduction.
SpermSperm: are the male reproductive cells. They are small. They have a head and a: are the male reproductive cells. They are small. They have a head and a
long tail called a flagellum. They are produced in large numbers from the time oflong tail called a flagellum. They are produced in large numbers from the time of
puberty.puberty.
OvaOva: are the female reproductive cells. They do not move. From puberty, an ovum: are the female reproductive cells. They do not move. From puberty, an ovum
matures every month.matures every month.

4. FEMALE REPRODUCTIVEFEMALE REPRODUCTIVE
SYSTEMSYSTEM
The female reproductive system is made up of these organs:The female reproductive system is made up of these organs:
·· The ovariesThe ovaries produce the ova.produce the ova.
·· The uterusThe uterus is where the baby develops.is where the baby develops.
·· The fallopian tubesThe fallopian tubes connect the ovaries to the uterus.connect the ovaries to the uterus.
·· The vaginaThe vagina connets the uterus to the outside of the body.connets the uterus to the outside of the body.
·· The vulvaThe vulva is the external part of the female reproductive system.is the external part of the female reproductive system.

5. MALE REPRODUCTIVEMALE REPRODUCTIVE
SYSTEMSYSTEM
The male reproductive system is made up of these organs:The male reproductive system is made up of these organs:
·· The testiclesThe testicles are outside the body.They produce sperm.They are covered by a bagare outside the body.They produce sperm.They are covered by a bag
of skin called scrotumof skin called scrotum
·· The vas deferenceThe vas deference take sperm from the testicles to the urethra.take sperm from the testicles to the urethra.
·· The urethraThe urethra takes the sperm outsides the body.takes the sperm outsides the body.
·· The seminal vesicles and prostateThe seminal vesicles and prostate produce seminal fluid and send it to theproduce seminal fluid and send it to the
urethra.urethra.
·· The penisThe penis is outside the male reproductive system.is outside the male reproductive system.

6. FERTILISATIONFERTILISATION
Fertilization occurs when an ovum and a sperm join inside the fallopianFertilization occurs when an ovum and a sperm join inside the fallopian
tubes and create a single cell called zygote.The zygote goes down thetubes and create a single cell called zygote.The zygote goes down the
fallopian tubes, it is implanted in the wall of the uterus and it becomes anfallopian tubes, it is implanted in the wall of the uterus and it becomes an
embryo.embryo.

7. PREGNANCYPREGNANCY
There are differents structures:There are differents structures:
** The placentaThe placenta takes nutrients and oxygen from the mother´s blood to the embryo.takes nutrients and oxygen from the mother´s blood to the embryo.
** The umbilicalThe umbilical cord connects the embryo to the placenta.cord connects the embryo to the placenta.
** The ambioticThe ambiotic sac protects the embryo.sac protects the embryo.
The baby develops step by step:The baby develops step by step:
** After 3 monthsAfter 3 months :: The embryo has all its organs. It becomes a foetus.The embryo has all its organs. It becomes a foetus.
** After 5 months:After 5 months: The baby´s body develops and it starts moving and the motherThe baby´s body develops and it starts moving and the mother
feelsfeels
it.it.
** After 9 monthsAfter 9 months :: The baby is ready to be born and it.The baby is ready to be born and it.

8. LABOURLABOUR
 Dilation:Dilation: Rhythmic contractions make the opening of the vagina and vulva bigRhythmic contractions make the opening of the vagina and vulva big
enough for the baby to como out.enough for the baby to como out.
 Expulsion:Expulsion: The baby is born and the doctor cuts the umbilical cord.The baby is born and the doctor cuts the umbilical cord.
 Afterbirth:Afterbirth: The placenta comes out of the mother´s body.The placenta comes out of the mother´s body.

9. THE ENDTHE END
¡¡HAPPY¡¡HAPPY
FRIDAY!!FRIDAY!!

10. THE ENDTHE END
¡¡HAPPY¡¡HAPPY
FRIDAY!!FRIDAY!!